[New Tang Dynasty News from December 06, 2021, Beijing time]A study published in Science on December 2 found that one is almost entirely composed of iron Exoplanet , Provides new clues for scientists to understand Mercury. Scientists have discovered the planet from some phenomena observed on the stars it orbits, and can infer its volume and mass characteristics. Kristine Lam of the Institute of Planetary Research at the German Aerospace Center (German Aerospace Center) said: “Our measurements show that this Exoplanet It is smaller than the Earth, and may be about the same size as Mercury, and is mainly composed…